.bill-tr{
    border: 1px solid;
}
.bill-td {
    border: 1px solid;
}
.bill-right-bottom-empty{
    border-right: 0px;
    border-bottom: 0px;
}
.bill-bottom-empty{
    border-bottom: 0px;
}
.bill-right-empty{
    border-right: 0px;
}
.mu-appbar-header {
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    z-index: 101;
    overflow: hidden
}